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#651 Re: Human missions » The Final Shuttle Mission » 2005-08-07 09:49:33

The only thing we could possibly do to the Shuttle(s) to make them more useful is to modify them to stay in orbit longer. With an alternetive method of launching ISS components we can greatly reduce the number of orbiter launches, possibly to one.

It might even be cheaper than trying to launching them for another 4 years, and we'll have a completed ISS and a medium/heavy lift launcher we didn't have before. I think thats the best possible position we could put ourselves in by 2010.

#652 Re: Unmanned probes » BepiColombo - ESA/JAXA Mercury Orbiters » 2005-08-05 14:40:42

Would a radar sweep be an effective method of searching for these vulcanoids>

Or would the Sun completely scrabble any data?

#653 Re: Planetary transportation » Contest: Build a Better Glove » 2005-08-05 14:30:29

Is it even possible to make SPF 10,000?  tongue

We may find our time is better spent developing mechanical extentions like those found on Robonaut.

#654 Re: Human missions » Retiring the Shuttle ASAP - How do we do it? » 2005-08-03 21:47:08

Is there any reason they can't insulate the individual LOX and LH tanks within the ET, instead of outside of the whole thing?

That way if anything falls off, it doesn't go far, and definately doesn't hit the Shuttle.

#655 Re: Human missions » Manned mission to Luna in 2018 » 2005-08-03 21:11:37

Its very much a catch-22 Greg.

My biggest concern is that the untrained voter will look at this plan as say "Hey, thats like Apollo 18" and say what the hell are they spending all this money on something we did (by then) a HALF CENTURY ago. Public interest could disapear even quicker than it did in the 1970's.

Personally I'm wondering just how much of that 12 tons of cargo to the surface is made up of consumable gases. Based on those 4 big tanks I'm going to say quite a bit. After all these years of learning how to and how not to recycle air and water for a couple months at a time on space stations, can't we use the same technology on the moon?

If you reduce the required mass just for survival for a week by using oxygen and water recyclers and carry much less comsumables you either reduce the need for that massive TLI stage (although that tank would be a great start for a base, its criminal to throw it out), or vastly increase the amount or science or construction payload you can carry.

What we need is a more robust "service module" capable of delivering and suppling a CEV from LEO, to the surface, and back to LEO.

#656 Re: Human missions » Privatized Human Missions » 2005-08-01 22:22:50

I thought some here may enjoy the eye-candy.

Bigelow. What a nut.  lol

Please tell me he's kidding. You don't need all that. Apollo astronauts stayed in a capsule with lander attached for the entire trip to the Moon. (My orbit trajectory calculator says it's 4 1/2 days.) They can do the same this time. You need more room for a 6 month journey to Mars, but muscle atrophy and bone decalcification for 4 1/2 days are negligible. Let's reduce that vehicle to the Soyuz-style return vehicle and lunar lander, with a simple TLI stage. All the other stuff including Bigelow's inflatable habitat are unnecessary. The Russian Soyuz developed for the Moon race had a slightly stretched service module for return to Earth. That's it, all you need. Any extra room is only needed for a lunar surface habitat. That would be one-way and would require some sort of landing system (read: where are the legs.)

I think everything aft of the docking node is service module.

Later on once we have an actual permenent base on the moon, we're going to want to pack the CEV with as many seats and supplies as possible. At that point expecting 6+ people to live in a now quite cramped capsule is a little too much to ask.

Thats actually a great platform to potentally do a near earth asteroid mission. Which I think will take place before a Mars mission.

#657 Re: Human missions » STS-114 Mission Coverage and Discussion » 2005-08-01 19:39:02

You know, I wonder if NASA is allowing all these little quirks to have a little more media attention than they possibly deserve. That way they can milk the existing issues to put themselves in a better position to go to Congress and ask for an alternetive launch method for ISS pieces.

#658 Re: Human missions » NASA Calls On Private Sector » 2005-07-30 11:54:22

*I'd be curious to see how they'd work out the NASA answers to the taxpayer vs Corporations answer to the investor issue.  Or they're supposed to anyway (we know how real life works, right?).

Given investors will always (logically) be more aggressive, proactive and interested in the corporation than the average taxpayer is in NASA, it's easy to foresee just who is really going to be calling the shots.  And most/all gov't personnel are already corporation puppets.

So:  The taxpayer will help fund something he/she will ultimately have little to no say over anyway.  Of course that's probably the case now.

But taxpayers default by not caring, in general...or so it seems.

Stay tuned, more chagrin to follow.

--Cindy

Well this is why I see NASA as a vanguard.

For the passed fifty years space as been all about Glory and Science, in that order. The things that goverments and industry have produced for these endevours have by and large not been usefull for anything else. Space probes can only probe space. Apollo could only beat the Soviets to the Moon. The Shuttle can do many things but only at heavy hanicap. The ISS can only (eventually) do obsure science with uses we won't understand for decades. Tang was cool only cause the astronauts drank it.

The great thing about the VSE though, if properly implemented, will have us actually making use of things found in space. At first for survival, but later for productivity. Once NASA and industry produces these, others, probably the the aerospace industry, can use the very same equipment that they didn't pay to develope, and can shadow and eventually overtake  NASA in the productivity department, as NASAs attention moves to to other targets.

NASA will always be about Glory and Science. But now we are just going to do it in ways that require us to be Productive as well.

#659 Re: Human missions » STS-114 Mission Coverage and Discussion » 2005-07-30 10:39:46

Of course it would lose properties when it gets too cold, but would that be a problem here? The insulation holds in the cold so well from the fuel that little/no condensation forms on the exterior of the tank, and accent only lasts a few minutes, and in fact may get hot from the supersonic air friction.

I could be wrong, but weren't we dropping Ice from Shuttles as well? Granted that might not be from the surface of the tank, but you've still got very cold surfaces in close vicinity that will need to be considered.

If it is a problem, then the "plan B" would be to wrap the pertinent portions of the tank with a mesh or netting made from a material that can withstand the temperatures applied while the tank's outermost foam is setting such that it is flush with the surface. Kevlar or titanium wire or something.

With the stress of launch that might just break the foam into pieces small enough to fit through the mesh, which depending on the size of the holes in the mesh, might mean just fine particulate, or pieces otherwise too small to cause any damage. But you got to be careful in how much weight you add to the tank, lest you some how alter the dynamics of the STS. This mesh after all, is payload.

I think the solution is not to spend another dime on the ET. After all, the Shuttle is going to be retired, and this won't be an issue with inline SDV, and even with a Shuttle-C, there a lot of things you can to the payload faring that you can't do with the Shuttle.

The solution is to look at the Shuttle itself, along with alternative launch methods, to limit the number of orbiter launches as much as possible. If we do it right, we can do it with 1, and even then not be concerned with reentry.

#660 Re: Human missions » NASA Calls On Private Sector » 2005-07-28 21:22:42

Lets not forget that any real lunar developement will require private industry to follow closely behind NASAs vanguard to make use of the local resources for further use in exploration and even to benifit Earth.

Of course, they'll do it once NASA proves all the designs and methods, but they'll have to figure out how to do that anyway just to survive.

#661 Re: Human missions » STS-114 Mission Coverage and Discussion » 2005-07-28 21:04:03

I don't like the current Shuttle design, but we're stuck with it. We won't get a better system until the ISS is finished and the best way to finish ISS is with Shuttle. I came up with a Shuttle-C/orbiter combination that completes it quickly, but that still relies on the Shuttle. If you don't like my idea then we're stuck with Shuttle. A 3-tonne unmanned tug with an end effector like CanadArm would cost more to develop. Any alternative would cost more. This shuttle flight was a success; let's call it that and get going.

Sounds a lot like Russian Roulette to me.

The story that NASA's foam trouble has gotten alot worse since switching to non-freon-applied foam for environmental reasons back in 97' apears to be true as well. NASA's incompetance is becomming more and more staggering... please explain why we are not using the freon-based foam? You know, the foam that would have reduced the liklihood of killing the Columbia crew which you knew fell off the tank and damaged tiles previously?

I'm glad someone brought this up cause I heard it as well. And I fear you answered your own question. The EPA decided that freon based foam was not environmentally friendly, and probably with a little prodding from the Clinton administration, NASA agreed to switch.

#662 Re: Human missions » STS-114 Mission Coverage and Discussion » 2005-07-27 18:57:43

So they are going back and trying to fix the tank so crap doesn't fall off.

Is this the same tank they said just yesterday that they could never completely prevent crap from falling off?

roll

#663 Re: Human missions » Mission One: a one way ticket to Mars? » 2005-07-27 11:24:30

Yes me to but why did you have to make 2 posts with the same message?

Double posts happen from time to time. Could be a site load error, connection issues, ect. It was probably not intentional.

#664 Re: Human missions » STS-114 Mission Coverage and Discussion » 2005-07-27 11:18:35

'Haven't decided if we need to take a closer look or not"

Theres a load of bull. roll

#665 Re: Life support systems » Nix the Sack Lunch & Portapotty » 2005-07-27 08:22:08

But without the portopotty, how are crews going to play the age old joke of tipping over the portopotty while a fellow crew member uses the portopotty?

Morale is vital. lol

#666 Re: Human missions » Mission One: a one way ticket to Mars? » 2005-07-27 07:43:13

If we don't send all the needed equipment to live off the land to begin with, they may inadvertantly become permenent residents anyway. And not in a good way.

#668 Re: Human missions » STS-114 Mission Coverage and Discussion » 2005-07-26 21:23:49

According to images at space flight now, they are just chips out of the tiles, which could either mean theres enough still there to do the job, or its a much more complicated repair and we are screwed.

Also, it would seem we took a bird out with us. Is that bad omen?
http://www.spaceflightnow.com/shuttle/s … es/]Debris Pics

#669 Re: Human missions » STS-114 Mission Coverage and Discussion » 2005-07-26 20:55:01

I think they can fix little tiles like that. Its just a matter of making sure the goo used to do it doesn't interfere with the landing gear door.

Regardless every issue like this reduces the number of shuttle launches we do. That much is clear.

The amount of sweating Griffen does over the next two weeks will weight heavily on what decisions are made over the next few months.

#670 Re: Not So Free Chat » Political Potpourri VIII » 2005-07-26 14:21:40

How bout just taxing people for what it cost to run the system. What it really cost to run the system. Not the BS costs by the insurance industry.

That would cut out medicade, medicare, the biggest drain on seniors SS checks, and so on. Crap that were all paying for anyway.

#671 Re: Life on Mars » Mars: Very Long, Bitter Freeze » 2005-07-26 09:38:29

Well, at least when it comes time to colonize, we won't have to worry about stepping on any natives.

#674 Re: Water on Mars » Ice Within Craters » 2005-07-26 08:06:11

How bout a giant dome over the whole crater, and gradually line the bottom in concrete. Then the ice is melted, soil is trucked in, atmosphere is provided.

And we have the first lakeside resort on Mars. smile

#675 Re: Human missions » STS-114 Mission Coverage and Discussion » 2005-07-26 07:29:55

Those of us not fortunate enough to have broadband are reduced to TV coverage. Which is none existant. I guess they feel they got burned last time.

NASA TV is great though.

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